The Patient Protection and Affordable Care Act of 2010 (ACA) is expected to increase insurance coverage for a significant number of Americans. But many problems in the health care system remain unresolved. As a future Primary Care Health Care Provider, please describe the following; 1. Why health is so important to Americans 2. Defining characteristics of the U.S. health care delivery system 3.Seven key challenges facing the health system 4.Stakeholders who shape and are affected by how the health system is organized and how it functions